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Implantable medical system for performing transthoracic impedance measurements associated with cardiac function

  • US 5,824,029 A
  • Filed: 04/28/1994
  • Issued: 10/20/1998
  • Est. Priority Date: 04/28/1994
  • Status: Expired due to Term
First Claim
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1. A medical electrical lead for performing impedance sensing associated with cardiac function comprising:

  • a lead body having a distal end and a proximal end, said lead body having a first conductor and a second conductor each extending along said lead body, said lead body having a terminal assembly disposed upon said proximal end for providing a connection between said plurality of conductors and a connector block of a medical device;

    a first electrode coupled to said first conductor, said first electrode disposed on said lead body;

    a second electrode coupled to said second conductor, said second electrode disposed on said lead body at a point spaced proximally back from said first electrode; and

    a third electrode capacitively coupled to said second electrode, said third electrode disposed on said lead body at a point spaced proximally back from said first electrode.

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